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    <title>springMvc入门程序</title>
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    <h3>入门程序</h3>
    <a href="user/hello">入门程序</a>
    <br/>
    <a href="user/testRequestMapping?username=heihei">RequestMapping注解</a>
    <br/>
    <a href="user/testRequestMapping2mthod">RequestMapping注解请求方式</a>
    <p> "a"标签天然就是get方式请求，因此对于post请求方式的映射路径就会报错：Request method 'GET' not supported </p>

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